reader.go | 2 ++

diff --git a/reader.go b/reader.go
index 105e1f19395dc7e9c1a959f37aaa3a02509946fe..4b96414c89ba0b549423d8b431a5a3ba02a1f189 100644
--- a/reader.go
+++ b/reader.go
@@ -222,6 +222,8 @@ 			err = nil
 			return
 		}
 		r.t.cl.mu.Lock()
+		// TODO: Just reset pieces in the readahead window. This might help
+		// prevent thrashing with small caches and file and piece priorities.
 		log.Printf("error reading torrent %q piece %d offset %d, %d bytes: %s", r.t, pi, po, len(b1), err)
 		r.t.updateAllPieceCompletions()
 		r.t.updateAllPiecePriorities()